Importance of the els in oboe  When playing the oboe, the lip-type control of the lips has a great effect on the pitch.The control of the lips is the lips to cover the teeth, its strength to properly make the lips elastic, elastic and tightly control the whistle.The teeth act as a cushion rather than a bite, which otherwise affect the whistle vibration and the pitch relation of pitch.Common some learners, because the lips are weak, will not control the whistle, can not find the appropriate seal, make the sound is low, bad intonation.To overcome this problem, try to tighten the lips to increase the pressure. When this force is too large, you will bite the whistle, and the pitch is too high.So when playing the low, medium, and high tone areas, the control of the lips is different, and each tone has its certain degree of tightness.Lips play the function of controlling the timbre, pitch, and intonation.The various relationships between music in different courses are also variable, such as the dominant nature of the tone, and using a scale medium range varies with up and down lines.The intonation cannot exist away from the embodiment of the musical artistic content. The study of the intonation is the creation process of the art. In this process, the intonation determination and the musical content determine the tonal characteristics of the intonation.The music used in playing the melody is not the twelve average law or the pure law, nor some kind of mathematical law that divides the octave into above twelve equal points.It is musical, a differential law, and a synthesis of various pitch relations between the various pitch difference fields.Therefore, the intonation played by a melody after playing several times is different, and it can be seen that the problem of intonation is always an artistic problem.This problem must be solved in the tonal structure of performing music works. For the player to constantly study the intonation through artistic practice, he must often grasp the tone of the whole fragment based on some complete musical passages.